Note 4 - Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2025

Notes Tables

Marketable Securities [Table Text Block]

	Fair Value Measurements as of March 31, 2025 Using:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	50,744	$	177	$	(7	)	$	50,914
Commercial paper		5,427		2		(2	)		5,427
Certificates of deposit		6,024		1		—			6,025
U.S. government treasuries		4,451		2		(4	)		4,449
Asset-backed securities		4,751		21		—			4,772
Total assets	$	71,397	$	203	$	(13	)	$	71,587

	Fair Value Measurements as of December 31, 2024 Using:
	Amortized Cost		Unrealized gains		Unrealized Losses			Fair Value
Assets
Corporate bonds	$	44,794	$	175	$	(6	)	$	44,963
Commercial paper		12,081		5		(2	)		12,084
Certificates of deposit		15,262		8		(1	)		15,269
U.S. government treasuries		4,408		2		(11	)		4,399
Asset-backed securities		6,484		40		—			6,524
Total assets	$	83,029	$	230	$	(20	)	$	83,239

Investments Classified by Contractual Maturity Date [Table Text Block]

	As of
	March 31, 2025		December 31, 2024
Maturing in one year or less	$	43,540	$	56,386
Maturing after one year through two years		28,047		26,853
Total	$	71,587	$	83,239